Skiving machine



June 21, 1932. F MElHsNER 1,864,141

SKIVING MACHINE Filed April 2. 1931 Freier/MF fa/7577.5177

Patented June 21, 1932 Y 1,864,141y i UNITED STATES PATENT OFFICE FREDERICK MEIHSNER, F MANITOWOC. WISCONSIN sKIvrNe MACHINE.

Application led April 2, 1 931. Serialy No. 527,117.

' This invention relates to improvements in Referring more particularly to the draw` skiving machines. v ing', I have provided an upright standard l One of the objects of the present invention having laterally disposed base flanges 2, aperis the provision of a skiving machine adapttured to receive fastening screws, bolts or 5 ed for cutting leather on an angle, whereby other similar retaining members. At the up- 55 two pieces of leather can be quickly and per end of the standard, I provide an elon-j easily matched without leaving any roughgated member 3, formed with a longitudinal cned surface at the connecting point, so as to bore to receive the rotatable shaft 4.y Mountprovide a perfectly smooth surface where the ed upon the outer end of this shaft 4 is a crank two pieces are connectedk together. arm 5 connected to the shaft by means of a no Another object of the present invention is set screw 6. The crank arm carries a handle theprovision of a skiving machine for cut- 7whereby the shaft4can be manually rotated. ting leather at av predetermined angle, so On the front end of the shaft 4 there is keyed that two pieces of leather can be smoothly a'serrated cylinder 8.

matched and includes a vyieldably mounted This cylinder is provided with longitu- 05 guard for maintaining the leather in proper dinal ribs, all inclined 'in the same general position relative to the cutting knife, so that direction, the ribs being indicated at 9 and the leather will be cut at the proper angle. in theoperation of the device, the cylinder I Another object of the present invention is is rotated in the same direction in which '20 the provision of improved means in a skiving the ribs incline, so that the outed edges of fo machine, manually operated for feeding the these ribs will engage the leather, as shown leather between the cutting blade and the ina Figure 2. One side of the standard 1 ,is yieldable guard, whereby a positive, even cut, provided with a laterally apertured projecat a predetermined angle, can be obtained, so tion 10 and engaged with the outer face of that two pieces of leather can be readily this projection is the lower end 11 of the te matched without leaving any roughened blade holder 12. The blade holder includesA seam.' a forwardly projecting arm 13 and the body Afurther object of the present invention of the holder indicated at 12 is secured to is the provision of a skiving machine of the one side of the elongated member 3 by means above character provided with an adjustable of the threaded studs 14 having nuts 15 so guard which may be readily adjusted relathreaded on the outer endsthereof. v tive to the feeder. and cutting blade, so that The `knife blade which is removably atpieces of leather of different kwidths may be tached to the upper face of the arm 13'inreadily fed to the cutting knife for cutting cludes a bodyV portion 16 having a cutting the'leather at an angle. edge 17 which projects beyond the inner side S5 With the above and other objects in view,` of the arm 13 and is arranged directly above the invention consists in the novel features of lthe cylinder 8. The blade 16 is removably construction, the combination and arrangeattached to the upper face of arm 13 by ment of parts hereinafter more fully set means of the screwmembers 18, the heads of lo forth, pointed Vout in the claims and shown whichy engage the opposite-ends of the blade, 90

in the accompanying drawing wherein: as shown in Figure 4 for securely retaining Figure 1 is a side elevation of a skiving mathe blade in place.

chine constructed in accordance with my in- Pivotally mounted upon the side of the vention; elongated member 3 oppositethe blade holder Figure2 is a sectional View on the line 22 12 is a rockable lever 19, the lower end of 95 -of Figure 1; l which is provided with an aperture to re- Figure 3is a sectional view on the line 3 3 ceive a guide rod 20. One end of the rod of Figure 2," and, -20 is connected to a lateral projecting lip 21 Figure 4 is a detailed plan view of the front carried by the standard 1.

end of the machine.

The other end of rod 2O extends through '100 the aperture in lever 19, with a nut 22 threaded thereon which can be adjusted .along the rod 20 for tensioning the coil spring 23 which is mounted upon the rod and disposed between the lip 21 and the lever 19. Extending laterally from the upper end of the lever 19 is a guard arm 24, which is tapered longitudinally and transversely to form a comparatively thin outer edge 25 and a thin outer end 26. The inner edge of the arm 24 tapers slightly on an angle and is ar- 'l' ranged directly opposite the edge 17 of blade 16. Therefore, it will be apparent 4that the inner edge of the guardarm 24 and the cutf;

ting edge of blade 16 both lie directly over the cylinder 8. `By .tapering the inner edge of arm 24, it will have a slight space at the outer end of theguard arm and at the outer end of the cutting blade to permit the leather to be readily inserted between the two members.

V Attention is directed tothe fact that while the lever 19 is shown as pivotally mounted upon a stud bolt 27, carried by the elongated portion 3, this stud bolt can easily be carrie-d by the standard 1. Adjustablymountedupon the forward end of the elongated member 3 is a guide plate 28 having a longitudinal slot 29 along its lower edge, in which is positioned a set screw 30 adapted to be tightened against the outer face of thef plate 28 for retaining the same in various adjusted positions relative 0 the forward end of the Yelongated mem- The guide plate 28 is provided adjacent its upper edge with a lateral extension 31 which extends outwardly away from the cylinder 8 with its upper edge in close proximity to the lower face of the guard arm 24. Therefore, when a piece of leather is inserted in between the guard arm and the cutting blade, the inner edge of the leather willstrike the lateral projection 31 of the guide plate to limit the inward movement of the leather.

From this it will be apparent that the width of the leather to be cut will be directed by the lateral projection 31. It will be apparent that the general use of this machine is for cutting oli the old soles of shoes, and the like, for repair, and cutting one edge of a new sole to match the remaining portion of the old sole, whereby the two pieces of leather can be quickly and easily matched together,

without leaving any roughened seam.

In removing the old sole, it is first cut oft` roughly near the shank portion which forms the instep, and the remaining stub end Yis then passed between the cutting edge an-d the guard arm, and due to the angular position of the cutting edge, it will provide a slanting cut, such as illustrated in Figure 3, and the inner end of the shank portion 'of the new sole can also be passed through in a like manner to provide a matching out. When the leather is first inserted, it is arranged beneath the guard arm adjacent the serrated cylinder 8, and the handle 7 is then grasped and by turning the shaft 4, the cylinder 8 is rotated which will grip the lower face of the leather and urge the same against the cutting edge 17.

. In most of the skiving machines in use at the present` time, which areV particularly Y adapted for cutting off the old soles of shoes and rematching a new sole thereto, the soles are passed llongitudinally through the machine requiring a longer time to properly eut the leather, whereas, in this device, the leather ispassed transversely between the guard arm and the cutting edge and cutting the sole pieces transversely in a very short space of time.

The two pieces of leathercut in this manner will be separated, as shown in Figure 2, one piecetraveling above the blade 16 and the other piece travelingl below the arm 13 andA striking the inclined'surface 32 of the arm to direct the same downwardly.

It will be apparent that as the leather is engaged by the cylinder and forced toward the cutting'edge 17, the arm 24 will be raised upwardly, rocking the lever 19 on its pivot against the tension of a spring 23. However, as soon as the leather has passed from between the cylinder 8, and the arm 24, the tension of the spring 23 will return the guard a-rm to its normal position in close proximity to the outersurface of the cylinder 8.

It will beV apparent from the foregoing that I have provided a simple and inexpensive skivingY machine whereby different types of leather, such as sole leather, and the like, can be skived olf at an angle for matching two pieces of leather together, and the operation can be very quickly carried out as previously described.

While I have shown and described the preferred embodiment of my invention, it will be apparent from theY 'foregoing that slight changes may be made in the construction when i putting the invention into practice without departing from the spirit of the same or the scope of the appended claims.

I cla-im: Y

1. Arskiving machine including a standard, a rotatable shaft supported thereby, a

Vcvlinder at one end of the shaft, longitudinal parallel ribs around the circumference of the cylinder arranged on an incline and all facingv in the same general direction, a knife blade supported by the standard with its cutting edge disposed above the cylinder, a piv- Votally mounted lever carried by the standard,

a guard arm at one endof the lever in opposed relation with the cutting blade and positioned above the cylinder, a lateral lip carried by the standard, a coil spring between the lip and the other end of the lever, and means for manually imparting movement to the shaft to rotate the cylinder in the direction in which the ribs are facing, whereby to urge the material beneath the guard arm and toward the cutting edge. 2. A skiving machine including a supporting standard, a rotatable shaft carried thereby, a serrated cylinder at one end of the shaft, a crank handle at the other end of the shaft for manually rotating the Same, a cutting blade carried by the standard with its cutting edge arranged above the cylinder, a pivotally mounted lever supported by the standard and having a laterally projecting guard arm arranged above the cylinder and in opposed relation with the cutting blade, a lateral lip on the standard, a coil spring normally disposed between the lip and the other end of the lever, an adjustable guide plate carried by the standard, and a lateral projecting portion at one edge of the guide plate. In testimony that I claim the Joregolng I have hereunto set my hand at Manitowoc, in the county of Manitowoc and State of Wisconsin.

FREDERICK MEII-ISNER. 

